KR950700634A - A multi-bandwidth SAW filter - Google Patents

A multi-bandwidth SAW filter

Info

Publication number
KR950700634A
KR950700634A KR1019940703047A KR19940703047A KR950700634A KR 950700634 A KR950700634 A KR 950700634A KR 1019940703047 A KR1019940703047 A KR 1019940703047A KR 19940703047 A KR19940703047 A KR 19940703047A KR 950700634 A KR950700634 A KR 950700634A
Authority
KR
South Korea
Prior art keywords
saw filter
bandwidth saw
bandwidth
filter
saw
Prior art date
Application number
KR1019940703047A
Other languages
Korean (ko)
Other versions
KR0146233B1 (en
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed filed Critical
Publication of KR950700634A publication Critical patent/KR950700634A/en
Application granted granted Critical
Publication of KR0146233B1 publication Critical patent/KR0146233B1/en

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/16—Modifications for eliminating interference voltages or currents
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H9/00—Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
    • H03H9/46—Filters
    • H03H9/64—Filters using surface acoustic waves
    • H03H9/6403—Programmable filters

Landscapes

  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Surface Acoustic Wave Elements And Circuit Networks Thereof (AREA)
  • Electrophonic Musical Instruments (AREA)
KR1019940703047A 1992-12-31 1993-12-14 Multi-bandwidth saw filter KR0146233B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US07/999,256 US5365207A (en) 1992-12-31 1992-12-31 Multi-bandwidth saw filter
US999.256 1992-12-31
PCT/US1993/012206 WO1994016498A1 (en) 1992-12-31 1993-12-14 A multi-bandwidth saw filter

Publications (2)

Publication Number Publication Date
KR950700634A true KR950700634A (en) 1995-01-16
KR0146233B1 KR0146233B1 (en) 1998-12-01

Family

ID=25546097

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019940703047A KR0146233B1 (en) 1992-12-31 1993-12-14 Multi-bandwidth saw filter

Country Status (10)

Country Link
US (1) US5365207A (en)
EP (1) EP0634067B1 (en)
JP (1) JP3071826B2 (en)
KR (1) KR0146233B1 (en)
CN (1) CN1092569A (en)
AU (1) AU5951994A (en)
CA (1) CA2130088C (en)
DE (1) DE69330309T2 (en)
FI (1) FI943985A (en)
WO (1) WO1994016498A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100240007B1 (en) * 1995-08-24 2000-01-15 아끼구사 나오유끼 Filter device and dualband radio system in which the filter device is used

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5663695A (en) * 1994-10-31 1997-09-02 Ngk Insulators, Ltd. Surface acoustic wave filter device and transducer therefor
DE19738229A1 (en) * 1997-09-02 1999-03-04 Bilz Otto Werkzeug Tool or tool holder
GB2346049A (en) * 1999-01-19 2000-07-26 Roke Manor Research Duplex filtering
US6483399B1 (en) * 1999-09-21 2002-11-19 Murata Manufacturing Co., Ltd. Duplexer and communication apparatus with first and second filters, the second filter having plural switch selectable saw filters
US20020157106A1 (en) * 2001-04-18 2002-10-24 Robert Uskali Cable channel search systems
US7687971B2 (en) * 2006-08-15 2010-03-30 Northrop Grumman Corporation Electric field control of surface acoustic wave velocity
US7656253B2 (en) 2007-04-18 2010-02-02 Northrop Grumman Space & Mission Systems Corporation Surface acoustic wave passband control
JP2010193351A (en) * 2009-02-20 2010-09-02 Alps Electric Co Ltd High-frequency apparatus
US20110012696A1 (en) * 2009-07-20 2011-01-20 Sony Ericsson Mobile Communications Ab Switched acoustic wave resonator for tunable filters
US8466776B2 (en) * 2010-07-01 2013-06-18 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration Extended range passive wireless tag system and method
US9083300B2 (en) 2010-09-01 2015-07-14 Qualcomm Mems Technologies, Inc. Electromechanical systems piezoelectric contour mode differential resonators and filters
WO2012055439A1 (en) * 2010-10-28 2012-05-03 Epcos Ag Switchable filter
CN103152011B (en) * 2013-03-14 2016-08-24 北京中讯四方科技股份有限公司 A kind of SAW filter based on the horizontal balance type structure of leggy paraphase

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3750027A (en) * 1970-08-12 1973-07-31 Texas Instruments Inc Surface wave frequency discriminators
GB1372052A (en) * 1971-01-05 1974-10-30 Mullard Ltd Electromechanical frequency selective devices
US4087714A (en) * 1971-10-18 1978-05-02 Hazeltine Corporation Three phase unidirectional transducer
US3855556A (en) * 1973-04-02 1974-12-17 Texas Instruments Inc Selectable frequency bandpass filter
US3831116A (en) * 1973-04-09 1974-08-20 Raytheon Co Surface acoustic wave filter
US4006290A (en) * 1974-08-12 1977-02-01 Gte Sylvania Incorporated Surface wave frequency selective device
JPS5824973B2 (en) * 1975-11-22 1983-05-24 松下電器産業株式会社 Dansei Hyōmen Hagata Filter
JPS5422745A (en) * 1977-07-22 1979-02-20 Hitachi Ltd Elastic surface wave filter
US4207545A (en) * 1978-08-25 1980-06-10 United Technologies Corporation Linear SAW signal processor
US4473888A (en) * 1981-10-28 1984-09-25 The United States Of America As Represented By The Secretary Of The Army Saw monolithic convolver using dispersive transducers
GB2123638B (en) * 1982-06-22 1986-02-26 Clarion Co Ltd Surface acoustic wave device
GB2166616B (en) * 1984-09-21 1989-07-19 Clarion Co Ltd Surface acoustic wave device
US4622525A (en) * 1985-07-19 1986-11-11 Sawtek, Inc. Low loss surface acoustic wave device and method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100240007B1 (en) * 1995-08-24 2000-01-15 아끼구사 나오유끼 Filter device and dualband radio system in which the filter device is used
US6115592A (en) * 1995-08-24 2000-09-05 Fujitsu Limited Filter device and dual-band radio system in which the filter device is used

Also Published As

Publication number Publication date
CA2130088A1 (en) 1994-07-21
CA2130088C (en) 1998-04-21
WO1994016498A1 (en) 1994-07-21
DE69330309T2 (en) 2001-09-20
EP0634067A4 (en) 1996-01-31
EP0634067B1 (en) 2001-06-06
DE69330309D1 (en) 2001-07-12
FI943985A0 (en) 1994-08-31
KR0146233B1 (en) 1998-12-01
JP3071826B2 (en) 2000-07-31
FI943985A (en) 1994-08-31
EP0634067A1 (en) 1995-01-18
JPH07504558A (en) 1995-05-18
CN1092569A (en) 1994-09-21
US5365207A (en) 1994-11-15
AU5951994A (en) 1994-08-15

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Legal Events

Date Code Title Description
A201 Request for examination
E902 Notification of reason for refusal
E701 Decision to grant or registration of patent right
GRNT Written decision to grant
LAPS Lapse due to unpaid annual fee